Corner shelf



FIG. 1 is a top and front perspective view of a corner shelf showing mynew design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a reduced top and front perspective view thereof, with thebroken-line disclosure being for illustrative purposes only and formingno part of the claimed design.

The dash lines in FIGS. 1-7 are for illustrative purposes only showingenvironmental subject matter and form no part of the claimed designs.

The ornamental design for a corner shelf, as shown and described.